Improvement in railway rails



T. R. TIMBY.

Improvement in Railway Rails.

No. 12}4,175. Patented Feb.27,1a72.

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THEODO-RE R. TIHBY, OF TARRYTOWN, NEW YORK.

IMPROVEMENT IN RAILWAY RAILS.

Speciiieation forming part of Letters Patent No. 124,175, dated February 27, 1872.

Specification of an Improvement in Railway Rails, invented by THEODORE It. TIMBY, of rfarrytown, in the county of Vestchester, State of New York.

The subject of this invention is a T-rail with a head and base of common form and a web corrugated in a peculiar manner, the prominent or salient part of each corrugation being straight and vertical, while the concave part unites by curved shoulders with the head and base, as hereinafter specified.

A great advantage results from forming the corrugations in the manner herein described. In that part where the chief strain is borne the face of the web is vertical. In forming the corrugations no abrupt angles are produced, and no violence or rupture is` caused to the fiber of the iron where the web is united to the head and base.

In the drawing, Figure l is an elevation of my improved rail. Fig. 2 is a horizontal section thereof at :c fr, Fig. l. Fig. 3 is a transverse section of the same at y y, Fig. l.

A is the head, and B the base, which may have the form of a common T-rail. rIhe web is of peculiar construction. It is formed with eorrugations, the shape of which will be understood when the manner of producing them is explained. Between the corrugated web and the head and base, respectively, are curved shoulders D, which are produced in the act of rolling the corrugations, and serve to strengthen the structure at those points and to prevent the straining of the metal in the act of final rolling.

In carrying out my invention I produce a T-rail with any necessary number of passes through rolls of any usual or suitable construction,the web bein giirstproduced straight, but of greater thickness than it is finally to have. The final shaping of therail is effected by passing it through rolls of peculiar shape with projections located in intermediate positions on the respective rolls, so as to produce concavities c alternately on opposite sides of the web, the salient or prominent parts C retaining their straight and vertical condition, and the metal at the parts C being undisturbed by the formation ofthe cavities c. These indentations or cavities o are not extended fully up to the head or down to the base 5 but the projections which form them are so shaped as to leave oblique curved shoulders D. I thus avoid any abrupt angles which would tend to weaken the structure. The depressions on alternate sides of the web are thus produced without any straining of the metal, and form together regular corrugations, which impart great lateral strength to the rail and permit material reduction in its Weight.

I am aware that it has before been proposed to form T-rails with corrugated webs; but I am not aware that any form has heretofore been devised for such corrugations, which could be successfully produced by rolling with out great strain and violence to the metal.

It will be observed that in my invention a common stra ght web of considera-ble thickness is first formed, and the surfaces of this web are not pressed outward in either direction, but, in the last rolling operation, concavities are formed on opposite sides of the web alternately, the displaced metal being forced upward and downward into the shoulders and head and base ofthe rail. These cavities are curved or concave in a vertical as well as in a horizontal direction, and, in forming them, abrupt bends or angles are entirely avoided. This enables me to produce a better rail, not

only because the metal is not strained andbroken in iirst rolling, but because no initial points of fracture are presented while the rail is in use.

I claim as my invention- 1. The T railway rail herein described, con- Witnesses l OcTAvIUs KNIGHT, WALTER ALLEN. 

